Wuhan Handern Buffer Packaging Material
DATE：2020/4/28 8:48:32 / READ： / SOURCE：This station
Wuhan Handern Buffer Packaging Material
1. The packaging characteristics of cushioning packaging materials are as follows
First, the absorption of impact energy: that is, it has a good absorption effect on the impact of the commodity; second, the vibration absorption: in addition to the impact of external impact, the packaged product also affects the movement and speed of the paper. If the natural frequency of the product is the same as the rate of the external force of vibration, resonance and resonance will occur, and the amplitude will increase. After reaching a certain value, the product will be damaged. Cushion packaging materials can absorb external vibration force and attenuate amplitude; third, resilience: cushion packaging materials will deform under external load conditions, but the external load can be removed to restore the original form, that is: static load and impact on the outside world, The deformation caused by the dynamic load of vibration has good recovery; first, compression denaturation: the phenomenon of slow deformation of the buffer packaging material under continuous action of static load over time is called pressure frost wax denaturation. This compression deformation should be The smaller the better; fifth, flexibility, good flexibility; sixth, applicable temperature and humidity: cushioning packaging materials can maintain its good cushioning performance at low temperatures, for example: polyurethane foam can rain to -300 The lowest operating temperature of PS foam can reach -20C, PE foam can be used to -50 ℃: seventh, buffer packaging application good acid resistance, alkali resistance, grease resistance, organic solvent resistance and salt resistance, light resistance: good antistatic It is easy to process and form, and it is easy to operate. The price should be cheap. The waste is easy to reuse and burn, but it does not cause environmental pollution. www.handern.com Meltblown non-woven equipment
2. Classification of Wuhan Modern Plastic Buffer Packaging Materials
There are many methods for the classification of plastic buffer packaging materials (see Table 6-1-1), but they are roughly divided according to the following methods:
①According to the structure of buffer packaging materials, there are two types of foam plastic and air cushion plastic film;
②According to the plastic resin, there are thermoplastic foams, such as PE, PP, PS, PVC, and thermosetting foams, such as Sheng foam, formaldehyde foam, polyurethane foam, etc .; according to the hardness of the foam, there are: 23 The elastic modulus of the foam under ℃ 50% R, H. is greater than 700MPa is called rigid foam: 700 ～ 70MPa is semi-rigid foam; <70MPa is flexible foam; www.handern.com meltblown Non-woven equipment
③According to the density of the foam, the density above 0.4g / cm2 (gas / solid ratio <1.5) is called low foaming density of 0.1 ~ 0.4g / cm 'for medium foaming (gas / solid ratio) 1.5 ～ 9); density below 0.1g / cm2 (gas / solid ratio> 9) is high foaming plastic. Or by foaming ratio, low foaming with a foaming ratio below 5 and high foaming with a foaming ratio above 5 are melt-blown non-woven equipment from www.handern.com
According to the structure of the cell, there are open-cell foam and closed-cell foam
In addition, it can also be classified according to the shape of the foam, including: foam sheet, foam sheet, foam profile, foam block, granular foam, foam pipe, mesh foam, etc .; according to whether the plastic cross-linking has non-cross-linking foam and Cross-linked foam plastic www.handern.com meltblown non-woven equipment
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